Range



H. MoEcKER, JR., ET AL 2,358,527

RANGE- Filed July s, 1940 4 sheets-sheet 1 sept. 19, .1944.

RANGE Filed July s, 1940 4 sheets-sheet 2 PLYMOECKER, JR., ETAL 2,358,527

RANGE Sept. 19, 1944.

Filed 'July 3, 1940 l 4 Sheets-Sheet 3 y www www@ Sept. 19, 1944.

H. MOECKER, JR., AL

RANGE -4 Sheets-Sheet 4 Filed July 5, 1940 f77-farmer.;

`range top `loeing .brokenaway to better the construction;

Patented Sept. 19, 1944 assister o Henry Moecker; Jr.,-Wil1iani-nslFrine-EawarajM.. Meacham, and Harold K Wl1te, Cleveland,r Ohio,v assignorsl to AmiericanaStovef Company St. Louis, Mo., a corporatiniir-.ofiNewJerseyL( f j i Application July 3, 1940;. seran N05., 343,846 "Y 165C1'aims.

. This invention is directed generally to cooking ranges or the like in which the cooking is accomplished by gas` or other fiuid fuelv burners, but the invention pertains more particularly and specifically towhat we term, and which are genervFig. l` isa fragmentary underside.:perspectivey view of the lcooking topf illustrated in Figs. 1l

' todi-ofthe drawings.u

ally referred to, as heavy duty ranges such as are "l used for'commercial cooking operations as perf iormed in hotels, restaurants n.and other places and institutions -where cooking on a large .scale is performed. v o The range is of the solid cooking top type,.as is kusually the case in; heavy duty ranges, kand one of the primary -objects of the invention'vis that of providing a,- range of thistype. adiequate cookingheat onk all areas of Y the cooking .top notwithstanding the.fact that the; cooking top has a much greater area than andasi-acon-` sequence 'extends a considerable .distance beyond all sides Yof the burner which is utilized-togheat saidtop. Y

'Another object-of the invention is toprovide a construction in which.the cooking-,top can vbe quickly and efficiently heated.Y

In the accomplishment of` theobjects `above recited a novel top construction is provided in 10 combination with a novel fluing arrangement for the burner chamber which lies-beneath said top.

lAnother and further ,objectof thev invention is to provide an improved( manner of -Sl-llplying and` distributing secondary air to` theburner within the vclosed cooking top burner chamber and utilizing the construction which-accomplishes said object to serve as a means for p rotecting the 4burner from spill-overs? or fboi1- overs which occur on thev cooking top-of the range-f Other objects, novel features of construction and improved results of a rangebuilt in accord with the present invention will appearfrom the following description and ther accompanying drawings which illustrate an embodiment which the invention may take in the p IQvision o1. V a range which performs to acconiplish-the results.

In the drawings:

Fig. l is a vertical sectionalview through 'the cooking top of a vrangebuilt in `accord'with .the present invention.l y .f 1 f Fig. 2 is a vertical sectional View taken at right angles to Fig. 1. i

Fig. 3 is a top plan view of the range appearing in Figs. 1 and Z-ofthe drawingsi one-halfcf the cooking top being remoVedand-parts ofthe illustrate desired `l.ig.r5 is a fragmentarytransversevertical seci tionalv-iew'through the cooking top. of a range illustratinga modified form of; the invention.

Y Fig.16.is a planv viewof the plate above the bnrnerwand formingY apart ofi-the.modiiedV construction illustrated in Fig, 510i the drawings.

Fig. lisa bottonipllanview illustrating a modiediorm of the` cooking top. plate.

. ig.v Vlisan enlarged detail sectional view taken .Having-reference now to the. drawings and particularly to Figs. 1 to 4 inclusive thereof, A d'esignates a baking vorcooking. oyen whichv is usually a conventional'part of la. cooking range and .above-thefulyly insulated -top l thereof is a cham- `berj'usually referred to generallyv as a., burner chamber' in'that within` this. chamber is the-burnerlo burners utilized to heat .the solid cooking .top v pon which the open cooking operations are per-formed. j.

In thepresent construction the solid .cooking top is made upV of a plurality of pieces all of which are supported and disposed to providea smooth .hoi'i'zlontally disposed surface. Beginning at the .front-ofthe rangethere isa transversely extending topvelvement'fZ which partakes 'ofthe nature ota frame. Thisu element VisV suitably supported upon the fully` insulated frontwall 3 of theburn- .enchamber andai; itsfrontje'dge is bent downyvardly, to provide anV apron-like portion 4while -*its inner edgeV is'. bent. downwardly and horizontal-ly linto the burner chamber to provide a-trans- .ange orf-shoulder 5. y At its rearfthe cooking topy is provided with a transversely. extending plate ,6 which partakes of .the-:nature of atop frame in that'it', like the Vversely and horizontallyv disposed supporting ,front member 2, is utilized as a supporting means fory the main solid cooking topof the range. At

its inneredgethe rear plate .6. is bent downwardly and inwardly to provide a horizontally disjposed-flange or shoulder 1 which lies in the same plane astheshoulder 5 ofthe-frame. member 2.

Theftrame .members 2 and' Bare supported at their ends upon angle irons 8 which extend from front.toback at the ends or sides of the range Vfand. which themselves are Vsupported upon the Youtwardly,.turned.upper ends; 3 of the side or .endwalls IO of the,cookingltopchamber. Short of .itsrearfend' the r'larigeftop backv plate frame memberv 6 Vis provided ,with a. transversely and v,-upv'vardlyfextending.flange". I. l .the .frontlface of this flue box is attached asiat II'to'the rear wall I8 of the rangeand bracedby a .bracket I9. A lower flue box 22 communicates with the oven Aand theupperfluebox I6. Y .i

A stack pipe 23 is supported on the rear end of the topplate 6 above an opening 24 provided therein. The lower ends of this stack are bent to form horizontal flanges 2'5 which abut ,suite able upwardly extending flanges 26.provided on asses?? Vburner G on its upper face is provided throughout the top plate 6. The iront wall of the stackpipe closely abuts the plate flange II and the construction is such that spill-overs or boil-Overs" cannot without great difliculty enter the -space between the flange and the stack pipe which as sists inmaintaining a cleaner range.

The main cooking top of the range is ncomposed of Va pair of identical plates which'are substan` tiallyrectangular in shape and one of whichV is indicated atB and the other at C in Fig. 2V of the drawings. 'These plates Vbetween them extend entirely across the range and each is of a length to extend from the front top frame plate 2 to the rear `frame plate 6. At their outer edges these main plates B and C are supported as indicated at 2l in Fig'. 2 of the `drawings while at their front edges they are supported uponv the shoulders kof the Aplate 2 and at theirVA rear edges. upon the shoulders 'I of theV rear frame plate 6. v Q f Y At their inner edges'the plates are provided with. a semi-circular cut-out portion 28 proe vided withra depressed and'surrounding flange or shoulder 29.V The remaining and` straight'inner side edgesof one plateare provided with ade-- pressed. and horizontally extending iang'eV or shoulder 30 which acts as a support for the `ad jacent edge of the other plate, as clearly'indicated at'3I in Fig. 2jof thev'drawings. 4

.The opposed semi-circularcut-out portions of these plates B and C form a circular opening in which are positioned a ring plate'D anda circular plate The ring, plate D is supported as indicatediat 32 in Fig. jl` of the drawings on the shoulders 29 of the semi-circular cut-out portions. of the plates B and C while the plate D at its inner edge'is provided with a circumferentially extending and depressed flange orshoulder 33 upon which is supported the circular platev E as indicated at 34 in Fig. 1 of the drawings. By'reference to the drawings it will be seen that the frontand rear frame plates 2 and `6 in com- A drum having an'zopenvtopV is'centrallyrlocated v within the cooking topV burner chamber, and is defined by a wall 35 the lower end of'which is inturned horizontally-'and suitably secured as at 31 to the upper face of the chamber Abottom which isformed by the bakingoven top I. A pair'of concentrically arranged burners are positioned the length thereof with a plurality of burner jets 4I Y arranged inV spaced relationship and extend- 15v ing. upwardly from the top of the main burner body.

By reference to Fig. 3 of the drawings it will be seen that the outer burner is suitably supported from the drum Wall by brackets 42 and that the outer burner is in spaced relationship tothe'drumwall to form Aan annular passageway 4 3. 1- The inner'burner is supported, as indicated atv 4 4-in Fig.- 1 of the drawings, by the outer burnen A separate and distinct gas or .other "fuel supply is provided for each of the burners and isobtained by carrying the fuel inlet manifold-pipes and 46 of the burners outwardly toa point beyond the front 3 of the burner chamber and connecting the same to a main gas supply pipe 41 which is positioned beneath the overhang of the top frame plate 2. The fuel connection for v'each' ofthe burners is made by any suitable vand conventional valve or cock 48 and manual manipulation of the valve handles 49 thereof' permit independent or conjoint use of the burners as the need for'heat upon the cookig'toprequiresl Primaryff for the burners is provided inthe usualA manner 'through the mixing bell ends 50 of theburner inlet manifolds 45 and 46 respectively. Secondary air is admitted into the burner chamberv near its bottom' and exteriorly of the burner drum through a plurality of openings 5 Ilrp'royided inthe side or end walls I0 of the chamber.-'Additiona1 secondary air is admitted into the 'rear en`d-of-the chamber adjacent its bottomthrough'openings 52 provided in the rear wall* of the 'burner chamber which 'is formed byfthe'upwardly extending end 53 of the baking Voven'rea'r wall I8 and through the enlarged openings54fthrough which the burner -mixing tubes 45 extend.l l' I The secondary air which Yenters the openings 5I.k 5 2 'and 54 is admitted into the lower end of the burner drum through four openings 55 provided in spaced relationship around the bottom of the burner drum. The secondary aironce it has :entered the bottom burner drum is then efficiently deliveredto the burner ports or jets of the burners by what we have termed combination aeration` plates and spill-over trays designated .at-'Hand K. These members are in the form of'vrings each of which has a specific cross sectional conguration. The outer ring or member l-L isdisposed within the annular space or passagewjay 43 between the burner drum wall and Vthe -outer ring burner Gandis of substantially a Ul-shape in crosssectionalconguration'- vThe Yupper end of the outer wallY of this member is bent to form a channelway to receive-the upper endgof the burner drum wall and in this manner have" supporting relationship with the drum as ihdicatedlatSSinFigL 1 of thedrawings. The inner wall' 5'I'of`the member flares inwardly towards the burner jets 4I of the outer burner asse-,527i

ring to provide an annular passageway through which` secondaryv air yis eliiciently Adelivered-'to the base of the flames at said burnet-jets.

The inner aeration plate and spill-over tray K is substantially V-shaped in cross sectional configuration and is disposed in the annular base or passageway 39 between thek innerand outer burner rings. The-side walls making up this member'are flared toward the burner jets carried bythe adjacent burner rings but the member is so disposed as to form at each of its sidesfan annular secondary air passageway. Secondary air in its travel through the passageway at Veach side of this member is directed-or distributed to the bases of theburner jets of 'the two burners Due to the flare of theA inner wall of the outer member H and the flare of both walls of the inner member K these members tend'to protect'the burner jets or ports from any spill-overs orA boilovers on the cooking top which might leak or run through the joints between the cooking top plate members B, E and D. By reference to Fig. l of the drawings it will be seen that these trays H and K are positioned beneath the meeting edges of said cooking top plates and thatftheir contour is such as to catch and retain any foreign matter which passes downwardly through the cooking top. This .construction knot only protects' the burner jets ibut is of material assistance in maintaining a sanitary range. l

The inner tray K is supported upon the inner burner ring by a plurality of wings 58 which appear in Fig. l of the drawings.

From the construction thus far described it will be seen that the burners are within a drum the upper end of which' is partially closed by the combination plates and spill-over trays H and K the construction and arrangement of which is such as to feed or distribute secondary air to `the burner ports in a highly efficient manner..

The chamberA which lies between the top l ofthe cooking oven and the solid cookingtop has been .referred to as the cooking top burner chamber rand that portion of Ithis chamber which lies about and surrounds the burner drum is divided Y El are free to give which provides for the division plate. Sv a Ysupport which will permit some degree of lateral expansion and contractionfof the division plate brought about by the heat to which it is subjected. W `A t its front end theplate is secured to the yfront wall 3 as at .64 while at its rear end the plate is provided with a support providing for expansion and contraction in a considerable degree. By reference to Fig. 1 of the drawings it. will be seen that theupper end 53 of the rear` wall` I8 isprovided with Ya transversely extending. bracket-like member 65 which is arranged in spacedV relationship to .the wall'53 and that the rear end of ithe vplate 59 is turned downwardly as at 66 into the spacebetween-the bracket and the wall 53. This-looseiitting support will permit lateral contraction andexpansion of the divisionplate 59. a further support for the-division plate we provide a vertically di-sposed plate 61T, which'isl perforated so as to` form no obstructionV to the passage of' secondaryair 68 rfor the passage of the burner drum 35.

which-is' admitted through the openings 52. at the. rear 'off the burnerchamben `It willV be obvious that the plate 59Y is provided with `an opening It will also be understood that from the construction thus far described the division plate 59 provides the burner chamber in a'manner to make the combustion chamlber portion thereof lie entirelyabove the plate 59 with the result that the products vof combustion generated by the burners cannot flow downwardly or strike back to intermixwith the vsecondary air being fed toV the burners. This is a desirable feature as will rbe understood [by thosev skilled in this art.

-The extension 53 of the cooking oven rear .wall I3 constitutes the rear wallfor the burnerchamber including the combustionchamber portiony thereof but Ythe upper-most end 69v vof this `wall stops short'of the under side ofthe rear lcooking top frame plate 6 so that there is a passageway 'lll providing communication between the rear end ofthe combustion chamber-and thecooking top flue box 'llwhich is in direct communicationwith the main outlet stack 23- whichextends completely across the rear end of the range. 4The oven gases are thus vented intothe stack at4 aA point above the-cooking top'.Y

Inaddition vto acting as ai burner chamber division plate the plate 59 serves as a support for the refractory slabs'M. These slabs completely cover the plateV 59 and underlie all of that portion-of the solid-cooking top whichr coversthat portion of the combustion chamber which surrounds the burner drum. Immediately adjacent the burner drum these refractory slabs have' ak substantially thick portion 'i3 Vwhile at their outer edges the slabsare reduced in thickness as at 14 to provide side ues or flue passageways or conduits l5.- At their front edges the slabs are similarly reduced in thickness toprovide a transversely extending flue conduit or fpassageway i6 the ends of which are in communication with the front ends of the side conduits in'thickness to provide-a combustionl chamber Y having a greater depth, as is indicated at Tl in Fig. 1 lof the'drawings.Y Preferably four refractory slabs are usedas this facilitates their manufactureY as welll as Vtheir insertion into the range structure. The slabs are of a size so that at their sides they are spaced slightly away from the side of the combustion chamber, as indicated at 18 and they are also slightlyspace-d apart at their adjacent edges as indicated at 19 in Fig. 2 of the drawings. The-upper adjacent edges of the slabs are tapered as at'80. This taper provi'des what we term a V-shaped groove which extends from the burner drum at opposite sides thereof outwardly to the thin portions of the slabs at the front and rear thereof.

Each of the slabs is .further provided in-their upper faces with aplurality of spacedl and radially extending V-shaped grooves 8l. These grooves have their inner ends terminating at those edges of the slabs adjacent the burner drum while' their Vouter ends extend to those portions of the slab which are of reduced thickness so that the outer ends-:of these grooves terminate at the surround- Y of the'drawings which supplementthe construction as it appears in Figs. l'to 3 of the drawings.

At their under sides these plates are provided with a plurality of spaced downwardly extending ribs or ns which extend radially from their arc or semi-circular edge 28 to their front, rear and side edges respectively. For the most part these ns are-shallow, that is to say, they'do not extend downwardly far enough to engage the upper face of the refractory slabs. There are two types of shallow ribs indicated on Fig. 4 as R; and S respectively. The iins R extend over the inner wall making up the shoulder 28 to the outer thickened portions 82 constituting the front, .rear and sidejvedges of the plate. For a portion of their length adjacent their outer ends these fins are of reduced thickness as indicated at 83. The ns S are disposed between the ns R and have the same thickness or depth as the reduced ends 83 of the ns YR. and their lengths are similar to the lengths of the reduced ends 83 of the ns R with the result that although their outer ends reach and merge with the side edges 82 of the plate B their inner edges stop far short of the inner ends of the fins R.

i construction reference should behad to Fig; V4

positioned betweenthe' twoburners and is of a-construction to burn a flame outwardly at each of itssidesijtoward the burner jets of the adjacent main burners. A manual fuel control valve for theY pilot light could be; positioned at the front ofthe range adjacent the main burner valve handles 49 and the pilot light can be ignitedby -removing the center cooking top plate E. However if desired the pilot light can be of In spaced relation We provide much deeper iins T. These ns extend al1 the way from the inner marginal edge of the shoulders 29 of the semi-circular portion of the plate B to the outer edges 82 thereof. These ns have a very deep portion 84 which is'of a length identical to the length of the V-shaped grooves 8l in the upper faces of the refractory slabs M` This extremely deep Vportion of the fins merges into `a thinner outer end portion 85 having a -depth substantially the same as that-of the outer endsv 83 of ns Rf. v p

VBy reference to Figs. 1 and 2 of the drawings it will be seen that there is a iin T for each of. the V-shaped grooves in the slabs including the V-shaped grooves formed by the tapered adjacent edges 80 of the slabs and that the fins extend downwardlyinto these grooves but in separated relationship to the side walls and bottoms thereof. i

This non-contacting relationship between the fins T and the grooves 8| of the slabs is of material importance. In the rst place it permits of variation in the manufacture ofthe parts making up the rangewhich reduces the manufacturing costs over what they would be if the parts had to fit with exact` accuracy. Additionally if there were a tight fit between the grooves and the fins and if the fins were of a length to touch the bottom of the grooves there would be grave possibility of damaging the refractory slabs when the cooking top plates B and C are dropped into place after they have been removed or during the assembly of the range. Mostimportant however is the fact that the loose fitting of these parts allows for warping or distortion which might occur tp someV degree in the refractory slab supporting plate 59Y orv in the top `plates B and C themselves. VIf the fins T were designed to` touch the bottom of the Y grooves and warping or distortion did occur then illustrated in Fig. 7 of the drawings.

the constant burning type sov that it will always stand ready tol-.automatically ignite either or both of the main burners when fuel is permitted to ilow. to-them by manipulation of their fuel control handles 479.A y.

vThe pilotrlight'is protected against the possibility of clogging from spill-overs or boil-overs by being, disposed beneath the combined spillover and aeration plate or ring K which is ared 'ipwardly as at'88 immediately above the pilot ight.V

From the description'thus .far given it will be seen that 4the deep cooking top plate fins T in combination with the l.grooved refractory slabs provide in the combustion chamber a plurality of radially extending conducting passageways or channels for the hot products of combustion which extend from the burners outwardly towards the sides, front and rear of the range. At their outer ends these radially extending channels communicatey either with the transverse ue Apassageway 16 at the front of the range, the side'iiue passageways 'I5 at either side of the range, or the space 11 adjacent the rear of the range. In each of these radially extending channels are disposed a plurality of the cooking top plate ns R and S which act as heat absorption members.

The operation of the range is extremely simple. The pilot light will ignite either or both of the main burners and as soon as ignition thereof takesv place secondary air is drawn into the botton of the cooking top burner chamber through the openings 5|, 52 and 54 at the sides, front and rear of said chamber respectively. This air then passes into the bottom of the burner drum through the Vopenings 55V and traveling upwardly therethrough is by the Vcombined air directing and spill-over trays or plates H and K evenly distributed to the bases of the burner ports or burner jets toassure maintenance of efficient combustion. The products of combustion generated by the burners travel away from the center burner area through the radially extending passageways dei-ined bythe ns T and vent into the surrounding ue conduits 15, 16 and 11 through which they travel to eventually dis,-

charge into thecooking top flue box 'Il and fromk it into the stack 23'V from which they are carried to any convenient point of discharge.

If desired provision can be made for the stack pipe 23 to pass through a warming oven formed as a part of a high splash .back at the rear of the range. Y

This construction assures uniform heating of the solid cooking top even at those points which are most remote from the burners and by positioning the supplemental iiue box 1I under the rear cooking top frame plate 6 additional heated cooking top area is provided.

A modified form ofconstruction of the under sides of the main cooking top plates B and C is 'I'he plate invthis instance is designated as an entirety at WV and Aits main difference over the previously described platesl resides in the provision of obstructions to the travel of the products of combustion throughthe radially extending. passageways -.be

also have in spaced relation throught-.heir lengths transversely extending ns`90.

The fins 89 and 90 are so disposedfwithineach of the radially extending passageways asl to render them tortuousbecaus'e these cross `lins .tend to retard the travel of the hot products of combustion thereby assuring'v the maximum `absorption by the stove top ofthe heat contained in these combustion gases.

. Vin Figss and 6 a snufurther modincanonof the invention is illustrated, butginasmuch as this construction is identical to thehereinbefore described preferred. form oi?L :the inventiony With.`the exception ofthe elimination of the combined ring-like air directing and spill-over trays VH and K.v and the substitution of a differently cony structed member therefor illustration of the oentral burner area only of the range is necessary' to an understanding of this modied construction. A Y, t

Those parts which are similarlto the previous- -ly described partsarermarked Withsimilar reference numerals and it will be seen that therevis the same burner drum 35 andY-thatthe burner chamber is divided into upperand lower chambers by the same horizontally disposed division wall orY plate l59y and that the same grooved refractory slabs M aresupported upon said .division plate. The burners-F and .Garci-the same and although the solid cooking-.top nis notzillustrated it will be constructed as illustrated in Fig. 1 of the drawings-so that the radial .flns'T will cooperate with Ythe yradialgrooves 8| of the refractoryslabs. t A Y The combined air directing and spill-over traysor rings H and K have-.been eliminated and in place thereof `we have substituted a. substantially ilat circular spill-over plate Z which isofa diameter slightly greater than thatof the burner drum V35 and is supported upon the upper ends of theside walls of said drum.r The plate isprovided with a downwardly 'extending circumferential ange 92 which is inset fromlthe peripheral I edge of the plate and telescopes-the upperendof vthe burner drum 35.

The plate is vprovided With a plurality of circumferential openings 93 which Whenthe plate-is properly positioned are above the` burner orices or Vjets 4I of the burners,

ABy reference to Fig. 5 of the drawings it lwill be.

seen that `the burner jets or orifices are raisedv and extend vertically above the upper. faces-of the burners and arefin spaced relationship to one another. The plate at its under-sident aplurality of points is provided with downwardly extending lugs 94. -These lugs have opposed Ysemi-circuerly align the openings 93 With the burnergetsM.

lThe plate in addition to being provided with .the-flame openings 93 is provided with three elongated `slots 91, 98v and 99. The slot l9'!` at its outer end includes three llame openings 93 and terminates at its inner end-in an enlarged circular opening lil. Intermediate its length the slot als'o is in communicationvvith a second. pair ofame lopenings 9.3.y .The slots 98 and 99 at .their outer .ends'jand intermediate their lengths lo vareY in communication with a plate burner opening .93. Bothpfv these "slots .also terminate in the central plate opening H10.` Y 1 `lin thatiorm of the invention illustrated in' Eig.. 5., the burners are automaticallyignited from the Vpilot light 81 Vin a manner heretofore described-in respect tothe first form .of the'invention as illustrated in Figs. ,1 to B Vinclusive of the drawings. f

jv'Respec'ting the modified construction wherein Athe plate Z is utilized it Will be .obvious that this this` plate acts as aY closure furthe upper end of l 1the burnerdrum to prevent the products of comv.sbustion above the plate from striking or traveling backfto i-ntermingle andY `thus contaminate the secondaryair which Visbeingled to the burners. f y.Spleciiicchanges in the construction illustrated and y.described can be ,made without departing fromthe spirit of the invention which is to be limited only ,bythe scope of the hereinafter appended claims.

vXVe .claim: 1.In a range,

wens canning a chamber and a1-solid cooking top thereabove. a j.burner Within said chamber, refractory material surrounding Vsaid burner and paralleling the under side of said cookingtop' but inspaced relation thereto, 1Vsaid .refractory material being provided with. grooves .extend-inggrooves' but having no IContact with theside or .bottom -walls of said grooves, Y saidA ns -in .combination with sa-idv grooves formingaplu- .rality of radially extending `flues the -inner ends of which are :in communication With said chamber adjacent the burnerand theouter ends/of -which are inrcommunication with said side. front .and rear` ..7flues, saidside, frontend rear nues Abeing-also 4in communication with one another,

landsaid rear-flue `communicating with the at- .mosphereexteriorto the yrange chamber.

v2. YIna range, Walls `defining a chamberand a /solid cooking top thereabove closingvsaid chamv Y be1,- a substantially Vcentrally .disposed vertically extending drum'in. saidchamber having an open upper end terminating short ofthe under-side of .said solid top, aJourner` provided With a plurality of ,burner Yorifices disposed `Within said drum, horizontally disposed refractory material surrounding said drum and dividing Vsaid chamber exterior tosaid-drum into .upper andlower chamber compartments, said refractory material parnhem`V saidflie Asurrour/riding, said `burner drinn from said. burner t 'paid urrounding fii'ues,

I burner. i i

of heatto thesolid cookingtop.

i V'7. .AV construction as in claim purpose described.

and being in'` spaced relationship thereta-fisaid re'- fractory material` being provldediwith a plurality of grooves` extending radially ioutwardlyirom i saidburner.drmtheiunder .Side .0f .aisold .top being providedgwith downwardly extending i fitting looselywthin' Said gropvesj arid .opifoiidirig a plurality of radially [extendinglues extendng l id the surrounding iiue vat one; sideefsaid chamber discharging to the atmosphere exterior tothe chamber, whereby said cooking top is uniformly heatedthroughout its areaby a centrallylocated 3. A construction as in claim 1, wherein aseoondary series of ns isprovided at theunder side of the cooking top and are disposed internmediate saidfirst named fins, said second series 'of fins stoppingshortof Contact with said refractory material and serving to act as heat absorption members to. aidin the veven distribution 4.; A constructionas in claim 1, wherein means isprovided in saidradially extending fluesrto re-` tardthespeed ofjtravelof the products of combustionV therethrough. j

' 5. A constructionas Vin clairnZ, wherein a cover Q plate' ist-loosely Y and removably supported on the Aupperendvoi, said burner drum above saidburner Y and is` provided withv a plurality.' of openings adapted to coincide and be alignedwith thefburner, orifices of said burner, and means at theunder side ci saidplate Yandjhaving engagement with ,said burner` fory automatically so ,aligning theA openings 'of said plate with the' burner `-orifices of the burner.

6. In arange, front, side and reargwiellsdeiininga chamben a solid cooking toprclosnre thererabove, said top at its underside beingfprovided` `with downwardly7 extendingqilns, a l urn e 1 A hav- '.ing a plurality of `burner Vorifices substantially Ycentrally located vin said,v chamber, ya' drumY surrounding said burner land having. an open upper end,` refractory material surrounding said drum nand dividing the chamber exterior Vofthe drum drum and terminating short of 4the peripheral edges mof said material and the side, frontend rearwalls of said chamber,saidcookingtop plate fins loosely tting within said ygrooves andbeing of substantially the same length vas said grooves,

akiiue beyond the outerjrends of said fins and surrounding said drum and c (njnpletely encirclingy Ysaid combustion chamber, said surrounding flue lprovided with an outlet opening'ty atmosphere, vand said nsr'providing a plurality of'r'adially extending ilues, communicating* at their inner ends with saidk drum andr atv their outer ends Vwith` said surrounding flue." ,e g i i i y Y f6,rwherein said finsloosely lit within saidgrooves, and said reiractory material is yieldablyA supported, for the {3..Ina range, a Yburner having a plurality of upwardly extending spaced members each'being provided witna burner .port in its upper face, ajdrum Asurrounding said burner, an aeration 'plate loosely supported for limited 'horizontall movement upon and j closing the upper end of jsaid drum, said. plate beingfprovided with a plujralityjof openings oneeach vof which is adapted 'tobe aligned with al burner port of said burner "toprovidejapassageway for the flames from ,said burner-ports, and elements extending downwardly from'the l,underside of said plate, each fofv said*'elementsgadapted to snugly enterthe space between; `a pair of said upwardly extend- "ingmembers'randjto engage the opposed sides of paced'-memb'ers tojthereby properly position aid plate withlthe openings. thereof in alignment with vsaid burner ports,

l9; In a range,` sidewalls and bottom defining a chamber having an open upper end, a solid 'cooking top 'closing they upper end of said chambl., a' burner within'said chamber, a horizontally -disposedfsecondaiy Tbottom within said chamber surrounding'saidjburner and paralleling the unfderfsidejoi saidgcooking top and positioned' intermediate' said cooking top 'and said chamber bottom, said secondary ,bottom having a, thick- :enedj portion provided vvith groovesl extending radially'eutward fr'oinsaid burner, said secondjarybottombeyondjthe outer ends ofrsaid grooves Vlbeingof reduced thiclnesslto ProvideV a ilue surl rounding the burner` and lying between itseli and @beendet vSide Qf .Said @elsing-tor, fnsfcarred Pyth'ef under iide ,0f Said booking. top and dis- 'posed within said rradially extendingv grooves but having yno Contact `with sides or bottom walls "of rsaid grooves; said fins constituting the side walls oi .aiplurality ,of radiallyextending open endedjflnes the inner fendssoi which lare adja- 'leent saidvhburner and, the'buter ends ofiV which Qjaen qmmuliiqation 'with said surrounding flue, and; said surrounding nue haying communication .ithlthe @answer/@exterior fsaid rarige Cham- 1:1.0 'AQrs-ti1i1fctieegin daim 6 wherein a f' closure ,plate providedl lwithV a Aplurality of open.- f i the passage'ofy theiburner naines iisjdisplosed theupper end of the burner .d el,aif ...ipe1ihgs'bein S0 esseci- -ated:with thefburner orifices of the' burner as to cause all the secondary air for the .burner to I bev drawnpast said burner princesas airpasses :upwardlyfrom the -lower'end c ifftheV drum into vvthe' onibustionchamber Aaboineftlie burner. llf-.l Avbnrner arrangement for a rangeor the Vlike` l'ciniprising, a gas 'burnerihaying' afcornb'ination f uel' and air inlet through which a mixture'iot gvasl'and primary air is transmitted," a "*housing'coinpietely enclosing` said burner and L provided atfafpoint below? "said burner Vwith a j secondaryairfinlet', s'aidfburnerhaving on its vupperface fa :plurality nof separate and 4spaced verticai extensions constituting burner ports, said chamber" 'vhavingV a oover providd with Ya plui rality of openings one each of which is for the f passage" of 7a" flame Aat loney of said burner ports, said chamber cover being loosely supported to permit its movement in 'j a` horizontal plane2 the fiinder sidfoff'said'-covr being provided with "a f pluralityof downwardly extending members'each of wliieliisoff-fa siz'e to-span 'the' distance between "afpai' f'extens'ionsoonstituting afpair of burner "portsfand'said cover extension members acting 'topro'peidy'p'osition"said co'ver with the openings V neriyr'ifi 'vertical "alignment with` the y burner portsof said burnerI i i lrzf-ivpirnerarrangement for a range or the ,likefcomprisin'gfa `gas burner having a' combina- '.tionffieland air inlet throngh which a mixture Of gas andprimary air lis' transmitted; a housing completely enclosing said burner and provided at a point below said burner with a secondary air inlet, said .burner having on its upper face a plurality of separate and spaced vertical extensions constituting burner ports, said chamber having a cover provided with a plurality of openings one each of which is for the passage of a iiame at one of said burner ports, said chamber cover being loosely supported to permit its movement in a horizontal plane, the under side of said cover being provided with a' plurality of downwardly extending members each of which is of a size to spanv the distance between a pair of extensions constituting a pair of .burner ports, and said cover extension members at their lower ends being of a shape to snugly engage and abut the opposing side walls of a pair of said burner extensions and acting to properly position said cover with the openings thereof in vertical alignment with the burner ports of said burner,

13. .In a range, a lburner having on its upper face a plurality of upwardly extending nibs having burner ports in their upper faces, a drum surrounding said burner and provided with a secondary air inlet opening disposed at a point beneathv said burner, a combination aeration and burner protecting plate loosely supported upony the upper end of said drum to permit its movement in a horizontal plane, said plate closing the upper end of said drum, said plate being provided with a plurality of openings one each of which is adapted to be aligned with one of said burner ports to provide a passageway for the ilames at said ports, a plurality of members carried by and extending downwardly from ther under side of said plate, said members being shaped to enter the space between the side walls of a pair of said burner nibs and acting to position and hold said loosely supported plate with the openings thereof in vertical alignment with said burner ports. n

14. A construction such as dened in claim 13 wherein, said burner nibs are of a circular shape in cross section and said downwardly extending members at the undery side of said plate have at their lower ends arc shaped cut-out portions which snugly engage and abut the opposed side walls of a pair of said burner nibs.

15. A construction such as defined in claim 13 wherein, said burner nibs have upwardlyV and inwardly extending side walls and are of a circu lar shape in cross section, and the lower ends of said plate downwardly extending members have their lower ends tapered and provided with arc shaped cut-out portions whereby said lower ends 'completely ll the space between a pair of said burner nibs and snugly engage and abut the opposed side walls of a pair of said nibs.

16. For use in a gas heating or cooking apparatus, a gaseous fuel burner provided on its upper surface with vertical extensions having therein fuel orices, a plate supported above and extending completely over said burner, said plate provided with a plurality of openings, and means carried at the under side of said plate and engaging said burner port extensions for positioning and holding said plate so that one of its openings is in vertical alignment with each of said burner ports.

HENRY MOECKER, JR. WILLIAM H. FRICK. EDWARD M. MEACHAM.. HAROLD K, WHITE. 

